Please note that error message " You must have at least one active order before you can add funds so you cannot proceed at the current time!'" means one order (website registration and domain hosting) must have been processed up to payment in order for an add funds invoice to be loaded and processed.
Once a first order is processed, you can proceed to adding funds in the steps described at this link:
http://okuhledigital.co.za/whmcs/index.php?rp=/knowledgebase/1/How-to-add-funds-to-your-account.html
